What combination of volumes (ml) of C2H4 and O2 are required to obtain 400ml of CO2? All volumes are measured at STP. 1. 100,300 2. 200,600 3. 200,200 4. 300,300
C2H4+3O2>>2CO2 +2 H2O
want 400ml? 100,300 will do it. Think out why.
To determine the combination of volumes of C2H4 (ethylene) and O2 (oxygen) required to obtain 400 ml of CO2 (carbon dioxide) at STP (Standard Temperature and Pressure), we need to balance the chemical equation for the reaction.
The balanced chemical equation for the combustion reaction between C2H4 and O2 to produce CO2 is:
C2H4 + O2 -> CO2 + H2O
From the equation, we can see that the ratio between C2H4 and CO2 is 1:1. This means that for every 1 volume of C2H4, we obtain 1 volume of CO2.
Since we want to obtain 400 ml of CO2, we need an equal volume of C2H4. Therefore, the correct combination of volumes is 400 ml of C2H4 and 400 ml of O2.
None of the given options (100,300; 200,600; 200,200; 300,300) match the correct combination of volumes.